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质量连续
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  mass continuity
     In order to solve the problem that continuity equation is not available on pressed surface, we replace the viscosity parts in Poisson equation and shallow water momentum equation with mass continuity equatioa The change makes the results much more stable and satisfy the conservation of mass.
     针对压力表面域因无法直接使用质量连续方程而易影响质量守恒的问题,本文在压力表面域使用压力泊松方程及浅水运动方程时,分别利用质量连续方程将压力泊松方程中的粘性项、惯性项与浅水运动方程中的粘性项做了适当的改造,从而极大的改善了解的守恒性及稳定性。
短句来源
     The distributions of diabatic heating rate estimated from integration of the isentropic mass continuity equation show that heating influences the upper-level divergence directly and the low-level vortex subsequently.
     利用等熵坐标质量连续方程计算的非绝热加热率分布表明,加热对高层辐散有直接的影响,从而有利于低层涡旋的维持。
短句来源
     The mass continuity equations of incompressible fluid are eliminated by the introduction ofthe penalty function method so that the computing time is shortened.
     流体和结构区域用混合的拉格朗日-欧拉运动描述(ALE),同时以罚参数法约掉不可压流体的质量连续方程,减少了计算工作量。
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     The results of numerical calculation show that the saltwater intrusion produces a salinity front, there exists a land-ward density induced current under the salinity front, and the current speed at the upper layer increases remarkably due to mass continuity through the transverse section.
     数值计算结果表明 ,盐水入侵产生盐度锋面 ,在锋面处底层存在着向陆的密度流 ,为保持断面上质量连续 ,上层的流速趋于增大 ;
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     In order to study how the flexible rubber pipe suppresses the pulsation of the fluid in it ,the wave equation is derived for the pressure waves inside the flexible rubber pipe by considering the mass continuity equation, the momentum equaiton and the radial impedance of the flexible rubber pipe wall.
     为研究挠性橡胶管衰减管内流体脉动的机理,由流体的质量连续和动量方程出发,并将挠性橡胶管管壁 的粘弹性和横截面径向阻抗率加以考虑,得出了管中压力波的波动方程.
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  “质量连续”译为未确定词的双语例句
     SOD activity of old mice serum increased 0.129Nu/mL after perfusion at 1.0g/kg body weight was performed for 12 days.
     以1.0g/kg体质量连续灌服12d的老年小鼠血清SOD活性提高0.129Nu/mL。
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     Study on Continuous Air Quality Monitoring System Based on Differential Optical Absorption Spectroscopy
     基于差分光学吸收光谱技术的空气质量连续监测系统研究
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     REPORT ON RESULTS OF MONITORING OF DISINFECTION AND STERILIZATION QUALITY FOR 5 SUCCESSIVE YEARS
     消毒灭菌质量连续5年监测结果报告
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     Research on Continuous Quality Detecting for Two Phase Flow of Water Vapor
     水蒸汽二相流质量连续检测的研究
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     Research on high quality continuous sampling techniques
     高质量连续取土技术研究
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  相似匹配句对
     Quality.
     质量
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     QUALITY
     质量
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     The Ways of Implementing Continuous Quality Improvement
     实施连续质量改进的途径
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     Quality Control of Continuous Extrusion Products
     连续挤压产品的质量控制
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     head continuous with body;
     头连续;
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  mass continuity
That in turn determines the radial motion from the mass continuity equation.
      
On the basis of the differential equations of fluid momentum and mass continuity, the distribution pressure function is derived by taking oil film inertia force into consideration.
      
Numerical solutions of energy and the vapour mass continuity equations have been carried out using the alternate direction implicit scheme of finite difference method.
      
Within the eruption column, the vertical and horizontal velocity fields can be calculated from exprimental and theoretical studies and consideration of mass continuity.
      
The simulated flow fields are shown to exhibit the input spatial correlation structure and observe mass continuity.
      
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In this paper a method is presented for analyzing the dynamic response of a buried frame structure subjected to a blast moving wave load of a transient nature. The structure is studied from the standpoint that it is a continuous system in elastic earth medium and having a distributed mass. Detailed investigation has been carried out on the rigid body motion of the underground closed frame under unsymmetrical moving wave loadings, and an extensive description of the analytical procedures has been given. Time...

In this paper a method is presented for analyzing the dynamic response of a buried frame structure subjected to a blast moving wave load of a transient nature. The structure is studied from the standpoint that it is a continuous system in elastic earth medium and having a distributed mass. Detailed investigation has been carried out on the rigid body motion of the underground closed frame under unsymmetrical moving wave loadings, and an extensive description of the analytical procedures has been given. Time depending relations for deflection and moment have been developed. The numerical solution of these quantities can readily be solved by a digital computer.

本文研讨了一种就承受短瞬移动作用爆炸行波荷载的浅埋框架结构进行动效分析的方法。结构系按弹性土体介质内具有分布质量的连续体系进行计算。文内比较详细的讨论了地下封闭框构在不对称动载下的整体刚体运动,给出了具体的计算步序,并演引出随时间变化关系的位移和弯矩。这些量值的数值介易于使用数字计算机电算。

In this paper analytic solutions for the natural frequency and mode of an oneway continuous four-sides supported rectangular ortothropic elastic plate with added masses and the steady response of the plate with complex damping under harmonic excitation are presented. The reaction of beams and added masses as well as con centrated forces are treated by means of Dirac δ function. The analytic solution is derived by means of finite Fourier transform. The solution thus obtained is a double trigonometric series and...

In this paper analytic solutions for the natural frequency and mode of an oneway continuous four-sides supported rectangular ortothropic elastic plate with added masses and the steady response of the plate with complex damping under harmonic excitation are presented. The reaction of beams and added masses as well as con centrated forces are treated by means of Dirac δ function. The analytic solution is derived by means of finite Fourier transform. The solution thus obtained is a double trigonometric series and it is simplified by summing up as a single series. The solution can be used for various supporting conditions taking care of the torsional rigidity of the supports and the beams.The solution is superior to the energy method. In the latter method the mode of vibration has to be assumed, which usually leads to some errors. For some special cases such as non-uniform spans, odd supporting conditions or those with large added masses, the error will likely be more serious.Some computational results are given and compared with the results of energy method and experiment. The results of the solution presented in this paper agrees well with the experimental results. Practically in computation only a few terms of the series are required for engineering accuracy.

本文从四边支承的带有附加集中质量的正交各向异性单向连续板的力学简化模型出发,利用Dirac σ函数处理了板上的附加集中质量、集中激振力、中间支座的弹性反力和弹性扭转反力矩.采用有限Fourier正弦变换,求得了系统自由振动和复阻尼稳态强迫振动的解析解.首先得到的是一个双重三角级数解,然后对解式做处理,求出其中一重和,得到一个单级数的解,从而改进了解的收敛性,文中定义了一些处理连续板动力问题的基本函数,并对解所适应的边界情况和中间支座情况进行了讨论.作者根据解的适应范围编制了719机通用电算程序,对带有附加集中质量的连续板的自振频率、振型和动力响应进行了实例计算,和试验结果相当接近.

The analytical expression of NusseJt Number is obtained by direct integration of the differential equations of momentum, energy and mass in circular tubes, with the application of equations of eddy viscosity e0/v and the ratio of the eddy diffusivities mn = αt/∈α, which were published in recent-years. Petukhov's Nusselt number expressions have been compared with the Nusselt number expression derived. The maximal deviation is found to be less than 7%. This Nusselt number expression can also apply to metal liquids...

The analytical expression of NusseJt Number is obtained by direct integration of the differential equations of momentum, energy and mass in circular tubes, with the application of equations of eddy viscosity e0/v and the ratio of the eddy diffusivities mn = αt/∈α, which were published in recent-years. Petukhov's Nusselt number expressions have been compared with the Nusselt number expression derived. The maximal deviation is found to be less than 7%. This Nusselt number expression can also apply to metal liquids with very low Pr number.

本文从动量,能量及质量连续微分方程式出发,结合有关涡流扩散系数关联式及传热涡流混合长与动量涡流混合长之比的关联式,用积分的方法解出努歇特准数(Nusselt Number)的分析解表达式.本公式与彼德柯夫(Petukhov)用数值解方法得出的努歇特准数关联式比较,最大偏差小于7%.本公式的贡献在于能用一个公式计算各种鲁兰特准数和10~4以上各种雷诺准数条件下的圆管中湍流传热的努歇特准数.

 
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